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Artykuły w czasopismach na temat "Atyidae"

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Christoffersen, Martin L. "Phylogenetic relationships between Oplophoridae, Atyidae, Pasiphaeidae, Alvinocarididae Fam. N., Bresiliidae, Psalidopodidae and Disciadidae (Crustacea caridea atyoidea)". Boletim de Zoologia 10, nr 10 (26.10.1986): 273. http://dx.doi.org/10.11606/issn.2526-3358.bolzoo.1986.122357.

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Os Pasiphaeoidea syn.n., Psalidopodoidea syn.n. e Bresilioidea syn.n. foram incluídos nos Atyoidea (mais correntemente conhecidos como Oplophoroidea), para se obter um conceito natural deste táxon. A monofilia do táxon Atyoidea emendado é indicado pelo exópodo reduzido do primeiro maxilípede. Uma hierarquia de 20 subgrupos monofiléticos, delimitados por 42 novidades evolutivas hipotéticas, é sintetizada num cladograma. A seguinte classificação filogenética sequenciada é proposta: Superfamília Atyoidea; Família Oplophoridae; Família Atyidae; Subfamília Xiphocaridinae; Gênero Xiphocaris; Subfamília Atyinae; Família Pasiphaeidae; Família Alvinocarididae fam.n.; Gênero Alvinocaris; Família Bresiliidae; Gênero Bresilia; Família Psalidopodidae; Gênero Psalidopus; Família Disciadidae; Gênero Pseudocheles; Gênero Lucaya; Gênero Tridiscias; Gênero Discias.
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MARIN, IVAN. "A new stygobiotic Xiphocaridinella (Crustacea: Decapoda: Atyidae) from the Motena Cave, Samegrelo-Zemo Svaneti region of Georgia, Caucasus". Zootaxa 4648, nr 3 (31.07.2019): 592–600. http://dx.doi.org/10.11646/zootaxa.4648.3.12.

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A new stygobiotic atyid shrimp from the genus Xiphocaridinella Sadowsky, 1930 (Crustacea: Decapoda: Atyidae) is described based on morphology and DNA analysis from an underground lake inside the Motena Cave (Martvili Municipality, Samegrelo-Zemo Svaneti, Western Georgia, Caucasus). The new species is genetically well isolated from the West Georgian relatives and clearly differs from the other Caucasian congeners by specific lanceolate unarmed rostrum, turned forward, and by long fingers of pereiopod I and II in both males and females.
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MARIN, IVAN. "Cryptic diversity of stygobiotic shrimp genus Xiphocaridinella Sadowsky, 1930 (Crustacea: Decapoda: Atyidae): the first case of species co-occurrence in the same cave system in the Western Caucasus". Zootaxa 4441, nr 2 (27.06.2018): 201. http://dx.doi.org/10.11646/zootaxa.4441.2.1.

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DNA barcoding of stygobiotic shrimps of the genus Xiphocaridinella Sadowsky, 1930 (Crustacea: Decapoda: Atyidae) collected in underground streams flowing inside two neighboring large karst caves (Otap and Abrskil сaves) revealed the presence of two distinct genetic lineages representing the first case of species co-occurrence in the Western Caucasus. The paper presents the complete morphological re-description of stygobiotic atyid shrimp Xiphocaridinella ablaskiri (Birštein, 1939) and the description of a new species using genetic and morphological analysis. Other known cases of co-occurrence of several stygobiotic shrimp species in the same cave system as well as new genetic data (COI mtDNA) on Western Caucasian species of the genus Xiphocaridinella are discussed in the paper.
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MARIN, IVAN. "On the taxonomic status of amphidromous shrimp Paratya borealis Volk, 1938 (Crustacea: Decapoda: Atyidae) from the south of the Russian Far East". Zootaxa 4444, nr 2 (9.07.2018): 154. http://dx.doi.org/10.11646/zootaxa.4444.2.4.

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One of the most northern representatives of the family Atyidae, an amphidromous shrimp Paratya borealis Volk, 1938 (Crustacea: Decapoda: Atyidae), is considered as a junior synonym of Paratya compressa (De Haan, 1844 [in De Haan, 1833-1850]) based on morphological and genetic investigations of the specimens collected in rivers flowing into Peter the Great Bay and Posyeta Bay along the Russian coasts of the Sea of Japan. The study greatly increases the area of distribution of P. compressa to north for more than 1000 km and suggests that the species probably inhabit rivers flowing into the Sea of Japan also along North and South Korean coasts.
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Bruce, AJ. "Pycnisia raptor, a new genus and species of predatory troglobic shrimp (Crustacea : Decapoda : Atyidae) from northern Australia". Invertebrate Systematics 6, nr 3 (1992): 553. http://dx.doi.org/10.1071/it9920553.

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Pycnisia raptor, gen. et sp. nov., a new predatory troglobic atyid shrimp from a limestone cave near Katherine, Northern Territory, Australia, is described and illustrated. The shrimp is immediately distinguishable from all other atyids by the presence of robust, raptorial ambulatory pereiopods. The troglobic atyid fauna of Australia is reviewed and a key provided for the identification of the six species of four genera presently known.
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Guo, Z. L., i S. De Grave. "Atyid shrimps of the genus Paracaridina (Crustacea, Decapoda, Atyidae) from Hunan Province, China". Hydrobiologia 513, nr 1 (luty 2004): 197–204. http://dx.doi.org/10.1023/b:hydr.0000018184.31353.49.

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Torati, Lucas Simon, Sammy De Grave, Timothy J. Page i Arthur Anker. "Atyidae and Palaemonidae (Crustacea: Decapoda: Caridea) of Bocas del Toro, Panama". Check List 7, nr 6 (1.12.2011): 798. http://dx.doi.org/10.15560/11026.

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The present contribution is a preliminary report on the freshwater caridean fauna of Bocas del Toro province, northeastern Panama, based on field collections carried out during a Shrimp Taxonomy Workshop at the STRI station in Bocas del Toro in August 2008. A total of eight species from two families, Atyidae and Palaemonidae, were collected at 17 different collection sites in the rivers, streams and ponds on several islands of the Bocas del Toro archipelago and the adjacent mainland. The species reported herein are Atya scabra (Leach, 1815), Jonga serrei (Bouvier, 1909), Micratya poeyi (Guérin-Méneville, 1855), Potimirim glabra (Kingsley, 1878), P. potimirim (Müller, 1881) (Atyidae), Palaemon pandaliformis (Stimpson, 1871), Macrobrachium acanthurus (Wiegmann, 1836) and M. crenulatum Holthuis, 1950 (Palaemonidae). The record of J. serrei is the first for Panama, and M. poeyi and P. glabra the first for Bocas del Toro province.
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Crosby, Trevor K., i Alan Carpenter. "ATYIDAE De Haan,[1849] (Crustacea, Decapoda) and ATYIDAE Thiele, 1926 (Mollusca, Gastropoda): proposals to remove the homonymy". Bulletin of zoological nomenclature. 43 (1986): 84–88. http://dx.doi.org/10.5962/bhl.part.381.

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LIU, XIAO-YAN, ZHAO-LIANG GUO i HUI YU. "Caridina xiangnanensis, a new freshwater atyid shrimp (Crustacea, Decapoda, Atyidae) from Hunan Province, China". Zootaxa 1153, nr 1 (17.03.2006): 43. http://dx.doi.org/10.11646/zootaxa.1153.1.5.

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Caridina xiangnanensis, new species is described on the basis of specimens collected from Lingxiu Village, Rucheng County, Hunan Province, China. This new species can be distiguished from the closely related species, C. paracornuta Cai & Yang, by the narrower endopod of the male first pleopod, lacking a projection on the proximal region; a longer appendix interna; a shorter appendix interna of the male second pleopod; and the comparatively narrower scaphocerite.
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Jugovic, Jure, Simona Prevorcnik, Gregor Aljancic i Boris Sket. "The atyid shrimp (Crustacea: Decapoda: Atyidae) rostrum: phylogeny versus adaptation, taxonomy versus trophic ecology". Journal of Natural History 44, nr 41-42 (12.10.2010): 2509–33. http://dx.doi.org/10.1080/00222933.2010.502258.

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Rozprawy doktorskie na temat "Atyidae"

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Page, Timothy J., i n/a. "An Evolutionary History of the Freshwater Shrimp Family Atyidae in Australia". Griffith University. Australian School of Environmental Studies, 2007. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20070725.120145.

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The aim of this thesis is to use phylogenetic analyses of mitochondrial DNA to investigate the biogeography and evolutionary relationships within the freshwater shrimp family Atyidae in Australia at a nested series of scales, both geographic and systematic. At the largest scale, the relationships between Australian and Indo-West Pacific species were inferred using the two most common atyid genera in Australia, Caridina and Paratya. Most atyids are hypothesised to have colonised Australia from Southeast Asia, but Paratya may be a Gondwanan relict given its distribution. Australian Paratya all form a strong clade, with a sister relationship to species from Tasman Sea islands. Molecular clock estimates place all of the splits within Paratya after the break-up of Gondwana, with Australia being colonised once 3½-8½ million years ago. This transoceanic dispersal is conjectured to have taken place through oceanic currents because of the amphidromous life cycle of some taxa of Paratya. Caridina has a very different biogeographic history in Australia, as numerous Australian species have close evolutionary relationships with non-Australian taxa from locations throughout the region. This implies many colonisations to or from Australia over a long period, and thus highlights the surprising adeptness of freshwater shrimp in dispersal across ocean barriers and the unity of much of the region's freshwater biota. A number of potential species radiations within Australia were also identified. This agrees with patterns detected for a large number of Australian freshwater taxa, and implies a vicariant explanation due to the development of colder, dryer climates. The systematic relationships of the remaining two Australian surface genera (Caridinides, Australatya) and two subterranean genera (Parisia, Pycnisia) were also investigated. Australatya forms a strong clade with Pacific 'Atya-like' genera, and Caridinides falls within a clade containing Australian Caridina. The hypogean genera, Parisia and Pycnisia, form a strong clade in all analyses, implying an Australian subterranean speciation. The possibility of a relationship between Parisia/Pycnisia and some Australian Caridina species may have implications for the monophyly of the highly disjunct genus Parisia, as it may descend from local Caridina species and represent convergent morphologies. The common and speciose genus Caridina was used as a model taxon for analyses within Australia. At the medium scale, molecular taxonomic techniques were used to uncover cryptic species within a problematic east Australian species complex. At least five species were detected. Phylogeographic and population genetic analyses were carried out on each of these five cryptic species, which diverged from each other in the late Miocene/Pliocene. There were very large differences between the species in the scales of overall geographic distribution, intraspecific divergence and population structure. These were characterised as either: 1) species with large ranges, low intraspecific divergence, limited phylogeographic structuring (Caridina sp. D); 2) species with large ranges, high intraspecific divergence, a high level of phylogeographic structuring (sp. B); 3) species with a limited range, low intraspecific divergence, no phylogeographic structuring (sp. E); or 4) species with limited ranges, high intraspecific divergences, a high level of phylogeographic structuring (sp. A & C). These patterns reflect a combination of large-scale factors, such as landscape structure and climate change, and small-scale factors, such as species-specific tolerances to local conditions and differing dispersal capabilities. Life history variation (egg size) between species may be correlated with different dispersal abilities. Species with the smallest eggs have the least intraspecific divergence and largest distribution, while those with the biggest eggs have the most divergence and smallest distribution, with medium-sized egg species in between. At the smallest phylogeographic scale, C. sp. C from the sand dune islands of Moreton Bay in southeastern Queensland was further analysed. Two different lineages (C1, C2) were found which diverged from each other during the late Miocene/Pliocene and so are older than the current landscape in which they are found. Small-scale phylogeographic analyses within C1, C2 and a sympatric fish identified divergences dating to the Pleistocene (about 100-300 thousand years ago). This implies that ice age sea-level changes may have structured these populations, although there is little observable influence of the last glacial maximum (about 18 thousand years ago). This study has highlighted a number of taxonomic anomalies within the Atyidae. The detection of many cryptic species implies that biodiversity within freshwater invertebrates is higher than currently appreciated. The evolutionary and biogeographic relationships of Australian atyids have proved complex, with many taxa having their own individual histories. At the large Indo-Pacific scale, dispersal is most evident, but within Australia, both vicariance and dispersal have been responsible for structuring all taxa at every scale.
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Page, Timothy J. "An Evolutionary History of the Freshwater Shrimp Family Atyidae in Australia". Thesis, Griffith University, 2007. http://hdl.handle.net/10072/367826.

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The aim of this thesis is to use phylogenetic analyses of mitochondrial DNA to investigate the biogeography and evolutionary relationships within the freshwater shrimp family Atyidae in Australia at a nested series of scales, both geographic and systematic. At the largest scale, the relationships between Australian and Indo-West Pacific species were inferred using the two most common atyid genera in Australia, Caridina and Paratya. Most atyids are hypothesised to have colonised Australia from Southeast Asia, but Paratya may be a Gondwanan relict given its distribution. Australian Paratya all form a strong clade, with a sister relationship to species from Tasman Sea islands. Molecular clock estimates place all of the splits within Paratya after the break-up of Gondwana, with Australia being colonised once 3½-8½ million years ago. This transoceanic dispersal is conjectured to have taken place through oceanic currents because of the amphidromous life cycle of some taxa of Paratya. Caridina has a very different biogeographic history in Australia, as numerous Australian species have close evolutionary relationships with non-Australian taxa from locations throughout the region. This implies many colonisations to or from Australia over a long period, and thus highlights the surprising adeptness of freshwater shrimp in dispersal across ocean barriers and the unity of much of the region's freshwater biota. A number of potential species radiations within Australia were also identified. This agrees with patterns detected for a large number of Australian freshwater taxa, and implies a vicariant explanation due to the development of colder, dryer climates. The systematic relationships of the remaining two Australian surface genera (Caridinides, Australatya) and two subterranean genera (Parisia, Pycnisia) were also investigated. Australatya forms a strong clade with Pacific 'Atya-like' genera, and Caridinides falls within a clade containing Australian Caridina. The hypogean genera, Parisia and Pycnisia, form a strong clade in all analyses, implying an Australian subterranean speciation. The possibility of a relationship between Parisia/Pycnisia and some Australian Caridina species may have implications for the monophyly of the highly disjunct genus Parisia, as it may descend from local Caridina species and represent convergent morphologies. The common and speciose genus Caridina was used as a model taxon for analyses within Australia. At the medium scale, molecular taxonomic techniques were used to uncover cryptic species within a problematic east Australian species complex. At least five species were detected. Phylogeographic and population genetic analyses were carried out on each of these five cryptic species, which diverged from each other in the late Miocene/Pliocene. There were very large differences between the species in the scales of overall geographic distribution, intraspecific divergence and population structure. These were characterised as either: 1) species with large ranges, low intraspecific divergence, limited phylogeographic structuring (Caridina sp. D); 2) species with large ranges, high intraspecific divergence, a high level of phylogeographic structuring (sp. B); 3) species with a limited range, low intraspecific divergence, no phylogeographic structuring (sp. E); or 4) species with limited ranges, high intraspecific divergences, a high level of phylogeographic structuring (sp. A & C). These patterns reflect a combination of large-scale factors, such as landscape structure and climate change, and small-scale factors, such as species-specific tolerances to local conditions and differing dispersal capabilities. Life history variation (egg size) between species may be correlated with different dispersal abilities. Species with the smallest eggs have the least intraspecific divergence and largest distribution, while those with the biggest eggs have the most divergence and smallest distribution, with medium-sized egg species in between. At the smallest phylogeographic scale, C. sp. C from the sand dune islands of Moreton Bay in southeastern Queensland was further analysed. Two different lineages (C1, C2) were found which diverged from each other during the late Miocene/Pliocene and so are older than the current landscape in which they are found. Small-scale phylogeographic analyses within C1, C2 and a sympatric fish identified divergences dating to the Pleistocene (about 100-300 thousand years ago). This implies that ice age sea-level changes may have structured these populations, although there is little observable influence of the last glacial maximum (about 18 thousand years ago). This study has highlighted a number of taxonomic anomalies within the Atyidae. The detection of many cryptic species implies that biodiversity within freshwater invertebrates is higher than currently appreciated. The evolutionary and biogeographic relationships of Australian atyids have proved complex, with many taxa having their own individual histories. At the large Indo-Pacific scale, dispersal is most evident, but within Australia, both vicariance and dispersal have been responsible for structuring all taxa at every scale.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Australian School of Environmental Studies
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Rodriguez, Garzon Tayner. "Hybridization Between Closely Related Lineages in the Paratya australiensis (Decapoda: Atyidae) Species Complex". Thesis, Griffith University, 2009. http://hdl.handle.net/10072/366809.

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Many species have been translocated from their native habitat into new environments. Some of these transfers have had negative impacts on the resident populations. Hybridization and introgression are some of the impacts that are associated with species incursions. These processes can potentially result in successful invasions and jeopardize the existence of native species and populations. It is thought that intraspecific hybridization can result in the loss of local adaptations and decrease adaptive divergence among populations. Understanding the factors affecting survival of the native species in altered landscapes is an important issue in species conservation. This study explores the processes that could lead to asymmetrical hybridization between two closely related lineages of freshwater shrimp Paratya australiensis. Selection pressure appears to be leading to extinction of one lineage in most of the sites adjacent to a pool where a translocation resulted in mixing of the two lineages (Hughes 2003). The aim of the thesis was to identify the processes and traits involved in the shaping of the current genetic structure of this shrimp following the translocation event; using genetic markers to identify what could have triggered the asymmetrical hybridization and almost complete extinction of the resident lineage. This is an ideal model system to study and understand interactions between recently (2-3 million years ago) diverged lineages. The translocated lineage 4 comes from Kilcoy Creek, which is at a higher altitude (cold temperatures) than Stony Creek, where the resident lineage 6 is situated (warm temperatures). The temperature differences and the fact that the two lineages were thought to have been isolated for 3million years, led to the expectation of some degree of reproductive isolation. Hughes et al. (2003) found that, after this translocation the reproductive isolation was asymmetrical, such that most of the males appeared to mate only with females from the introduced lineage 4. They noticed that lineage 4 was inducing lineage 6 to the edge of extinction in its local environment. This particular translocation event provides an ideal opportunity to test a number of hypotheses to explain asymmetrical hybridization. The sensory drive hypothesis focuses on how mating signals are effective for particular environments and may differ between environments (Endler, 1992). The second hypothesis proposed by Hughes et al. (2003), focuses on the fact that crosses between the resident females and translocated males lineages and vice versa may have differential viability.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Griffith School of Environment
Science, Environment, Engineering and Technology
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Fonseca, Kátia Maria Leal da. "Camarões (Atyidae e Palaemonidae) da rede fluvial do Estado do Rio de Janeiro : sistemática e distribuição". Universidade Federal do Rio de Janeiro, 1995. http://hdl.handle.net/11422/4063.

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Esta dissertação compreende um estudo da sistemática e da distribuição geográfica dos camarões de água doce (Atyidae e Palaemonidae) existentes na rede fluvial do Estado do Rio de Janeiro. O presente estudo vem contribuir para o conhecimento de alguns aspectos ambientais ( salinidade, temperatura, declividade e oxigênio) os quais influenciam a distribuição destes animais. São considerados, também, os mecanismos de dispersão por eles utilizados. Este trabalho é constituído de uma introdução, uma parte sistemática, discussão, conclusões, referências bibliográficas, três quadros, cinco mapas e dez estampas das espécies estudadas. São apresentadas chaves de identificação para famílias e espécies, diagnoses das famílias e subfamílias, caracterização das espécies, tamanho, localidade tipo, distribuição geográfica, material examinado e observações. É registrada a ocorrência de uma espécie ainda não assinalada para a região, questionada a validade de uma espécie; e também são referidos fatores que influenciam a distribuição das espécies. As espécies são distribuídas de acordo com as unidades hidrográficas delimitadas pela SERLA (Superintendência Estadual de Rios e Lagos) em 1985.
Systematics and geographic distribution of freshwater shrimps (Atyidae and Palaemonidae) from the Rio de Janeiro fluvial system were studied. Some environmental factors (salinity, temperature, declivity and oxygen) influence upon species distribution. This dissertation contains an introduction, systematic part, discussion, conclusions, bibliography, three squares, five maps and ten plates corresponding to the species studied. Keys for classification of families and species, diagnosis of families and subfamilies are shown. Characterization, size, type locality, geographic distribution, material examined and notes for each species are mentioned. The occurrence of one species not yet recorded from the region is mentioned, the validity of one species is discussed, and reported factors which influence upon the species distribution. The species are distributed according to the hydrographic basins delimitated for SERLA (Superintendência Estadual de Rios e Lagos) in 1985.
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Ketse, Noziphiwo. "The effects of selected reference toxicants on embryonic development of the freshwater shrimp caridina nilotica (Decapoda: Atyidae)". Thesis, Rhodes University, 2007. http://hdl.handle.net/10962/d1005367.

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Aquatic toxicity tests are increasingly being used in water resource management worldwide, and currently in South Africa, policy and legislation are being drafted to reflect this international trend. While standard toxicity test methods and test organisms are being considered to develop and set water quality guidelines and effluent discharge limits, it is not clear whether guidelines and discharge limits set using these standard test organisms will be sufficient to protect South Africa’s scarce water resources. As part of ongoing research to investigate the use of indigenous riverine organisms as toxicity test organisms a number of potential species have been identified, including the freshwater shrimp Caridina nilotica. For much of the history of aquatic toxicological data the bulk of the data has been generated by acute toxicity testing, based on short exposures and using mortality as the response end point. There are relatively few chronic, longterm tests with sub-lethal endpoints. However, it was recognized that information about longer exposure durations and non lethal response endpoints was needed, instead of mortality. Chronic tests can provide a more environmentally realistic measure of chemical toxicity than acute toxicity tests. Caridina nilotica has been identified as a potential standard toxicity test organism, as it is widely distributed, easy to find and it occurs in flowing waters. It is an indigenous species which can be easily cultured and maintained in the laboratory and is also ecologically important. Both adults and juveniles have been used successfully in acute toxicity tests at the Institute for Water Research (Rhodes University) and the ability to rear the organisms under laboratory conditions has allowed the development of chronic toxicity tests using C. nilotica. Chronic early life stage tests include continuous exposure of the early life stages, which are presumed to be the most sensitive for aquatic organisms. This study reports on the embryonic development of C. nilotica at the culture temperature of 24⁰C. Morphological developmental stages were monitored and measured and 7 developmental stages were identified. Based on the measurements of the features that were identified, toxicity tests using the reference chemicals sodium chloride (NaCl), sodium sulphate (Na₂SO₄) and cadmium chloride (CdCl₂) were undertaken to test the suitability of C. nilotica embryonic development for chronic toxicity tests for use in water resource management. The length, width, length:width ratios and area of the features decreased in size when exposed to the chemicals. The Lowest Observed Effect Concentration (LOEC) values were 2000mg/L for Na₂SO₄, 3000mg/L for NaCl and 0.31mg/L for CdCl₂. The No Observed Effect Concentration (NOEC) values were 1000mg/L for Na₂SO₄, 2000mg/L for NaCl and <0.31mg/L for CdCl₂. Further research on the teratogenic effects of single chemicals and industrial effluent on developing C. nilotica embryos needs to be undertaken in order to evaluate the described test protocol for use in water resource management.
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Yam, Sau-wai, i 任秀慧. "Life history, population genetics and feeding ecology of Caridina cantonensis and C. serrata(decapoda: Atyidae) in Hong Kong streams". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B45015181.

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Oliveira, Caio Martins Cruz Alves de. "Avaliação sistemática de camarões de água doce do gênero Atya Leach, 1816 (Crustacea: Decapoda: Atyidae) por meio de dados moleculares". Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/59/59139/tde-10072017-090906/.

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Os camarões do gênero Atya Leach, 1816 são os maiores camarões da família Atyidae, sendo que as 13 espécies reconhecidas estão distribuídas em rios e riachos das regiões tropicais e subtropicais da América (vertentes atlântica e pacífica) e oeste da África. O primeiro relato de uma Atya ocorreu no séc. XVII e, desde então, novas espécies foram descritas e descrições prévias revisadas, produzindo um histórico de instabilidade e reclassificações. Embora ao longo do séc. XX revisões taxonômicas tenham estabilizado a sistemática do gênero, a variabilidade morfológica e distribuição geográfica trans-ístmica da espécie A. innocous gerou questionamentos. Além disso, mais recentemente trabalhos de filogenia molecular da família Atyidae que incluíram representantes de Atya suscitaram questões em relação à sistemática do gênero (possível não monofilia) e de algumas espécies como A. gabonensis, A. margaritacea e A. scabra. Visto que o uso de marcadores moleculares nunca foi empregado para a delimitação das espécies de Atya e que seu uso de forma complementar à morfologia poderia aperfeiçoar a sistemática do gênero, o objetivo do presente estudo foi avaliar por meio de dados moleculares as hipóteses taxonômicas das espécies A. gabonensis, A. innocous, A. margaritacea e A. scabra. Sequências dos genes mitocondriais 16S e Citocromo Oxidase I e gene nuclear Histona 3 foram geradas por meio de protocolos de extração e sequenciamento de DNA a partir do tecido de espécimes obtidos em empréstimos/doações. Potenciais espécies evidenciadas pelas análises de similaridade nucleotídicas (distâncias genéticas), compartilhamento de caracteres em um contexto evolutivo (reconstruções filogenéticas), Automatic Barcode Gap Discovery, Poisson Tree Processes e Generalized Mixed Yule Coalescence foram confrontadas com as hipóteses taxonômicas específicas atuais. A avaliação sistemática com dados moleculares aqui realizada, adicionalmente às informações morfológicas existentes na literatura sustentaram A. gabonensis como uma espécie de distribuição anfi-atlântica, mas não corroborou a hipótese de A. innocous como uma espécie trans-ístmica. Assim, o uso do nome A. innocous para as populações do Mar do Caribe e A. tenella para aquelas restritas ao Pacífico é sugerido. A espécie A. margaritacea, distribuída ao longo da costa pacífica da América foi considerada uma espécie válida e distinta de A. scabra, amplamente distribuída na vertente atlântica da América do Sul, África e Mar do Caribe. Contudo, é discutida a possibilidade de uma espécie críptica restrita no Golfo do México existir. Adicionalmente, o conhecimento existente e pertinente para futuros estudos de sistemática e taxonomia sobre os camarões do gênero Atya foram sumarizados e são apresentados.
The genus Atya Leach, 1816 shrimps are the largest of the Atyidae family, and the 13 acknowledge species are geographically distributed in rivers and stream in the tropical and subtropical regions of America (Atlantic and Pacific drainages) and West Africa. The first registry of an Atya was in the XVII century and since then new species were described and previous description revised in an eventful taxonomic historic. Although throughout the XX century taxonomic revisions stabilized the genus systematics, the morphological variability and the trans-isthmic geographic distribution of A. innocous caused questioning. Moreover, molecular phylogenetic studies that included Atya representatives raised doubt on the genus systematics (possibly non-monophyletism) and some species A. gabonensis A. margaritacea and A. scabra hypothesis. As molecular markers have never been used concerning Atya species delimitation complementary to the morphology and it could improve the genus systematics, the goal of this study was to evaluate with molecular markers the taxonomic hypothesis of the species A. gabonensis, A. innocous, A. margaritacea e A. scabra. Sequences of the mitochondrial genes 16S and Cytochrome Oxidase I and nuclear gene Histone 3 were generated by means of DNA extraction and sequence protocols from specimens obtained in loans/donations. Putative species evidenced by the analysis of nucleotide similarity (genetic distances), character sharing (phylogenetic reconstitutions), Automatic Barcode Gap Discovery, Poisson Tree Processes and Generalized Mixed Yule Coalescence were compared to the prevailing taxonomic hypothesis. The systematic evaluation with the molecular data of this study, in addition with the morphological information in the literature sustain A. gabonensis as an amphi-atlantic distributed species, but do not corroborated A. innocous hypothesis as an trans-isthmian species. In this sense, the use of A. innocous stricto sensu for the Caribbeans Sea populations and A. tenella to that restricted to the pacific drainage of America is suggested. Atya margaritacea, distributed along the pacific drainage of America, is considered a valid species distinct from A. scabra, widespread distributed in the Atlantic drainage of America and Africa, besides Caribbean Sea. However, the possibility of a cryptic species in the Gulf of Mexico population is discussed. Aditionally, the relevant knowledge to future systematic and taxonomy studies about the shrimps of the genus Atya were summarized and are shown.
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Frotte, Lou. "Réponses trophique et démographique aux perturbations de continuité écologique chez les espèces amphiromes de Guadeloupe". Thesis, Antilles, 2019. http://www.theses.fr/2019ANTI0405.

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Le macrofaune indigène des rivières insulaires caribéennes est constituée majoritairement d’espèces de poisson et de crustacé amphidromes. L’amphidromie est un cycle de vie caractérisé par la dévalaison des larves vers la mer suivi d’une dispersion larvaire marine, les juvéniles retournent en rivière pour grandir, y résider et se reproduire. Au cours de leurs migrations en rivière, ces individus rencontrent des perturbations de continuité écologique, telles que des barrages de hauteurs de chute variables. Ces ouvrages sont très largement répandus dans les rivières insulaires tropicales car ils permettent l’extraction de l’eau pour la production d’eau potable. Les objectifs de cette thèse ont été de caractériser leurs impacts sur la structure démographique et l’organisation trophique des populations de poissons et crustacés majoritaires aux Antilles et présentes sur l’ensemble du continuum de la rivière. Ce travail a été mené sur trois rivières de Guadeloupe afin d’analyser (1) la structure démographique de leurs populations et leur capacité à franchir les obstacles ; (2) la taille et le déplacement de leur niche trophique sous l’impact des obstacles à l’aide de l’analyse d’isotopes stables du carbone et de l’azote ; (3) l’évolution de la qualité nutritionnelle des sources de nourriture et la teneur en acides gras des consommateurs sur un gradient altitudinal grâce à des analyses lipidiques. Les résultats obtenus mettent en évidence (i) le rôle des embouchures comme lieu-clé assurant la résilience des milieux ; (ii) la qualité nutritionnelle des sources de nourritures comme l’un des éléments pouvant expliquer la montaison des espèces ; (iii) l’importance des transferts de matière allochtone de l’amont vers l’aval pour l’apport en acides gras essentiels ; (iv) le contexte environnemental au niveau de l’ouvrage déterminant les impacts démographiques et trophiques ; (v) des impacts trophiques visibles qui diffèrent en fonction des groupes fonctionnels, de leur place dans le réseau trophique et de la plasticité alimentaire des espèces
The native macrofauna of Caribbean island rivers consists mainly of amphidromous fish and crustacean species. Amphidromy is a life cycle characterized by the downstream migration of larvae towards the sea followed by a marine larval dispersion, juveniles return to the river to grow, reside and reproduce. During their migrations in rivers, these individuals encounter ecological continuity disturbances, such as dams with variable head heights. These dams are widespread in tropical island rivers because it enables the extraction of water for the production of drinking water. The objectives of this PhD were to determine their impacts on the demographic structure and trophic organization of the majority of fish and crustacean populations in the West Indies and present along the entire continuum of the river. This work was carried out on three rivers in Guadeloupe in order to analyze (1) the demographic structure of their population and their ability to overcome obstacles; (2) the size and shift of their trophic niche under the impact of obstacles using the analysis of stable isotopes of Carbon and Nitrogen; (3) the evolution of the nutritional quality of food sources and the fatty acid composition of consumers on an altitudinal gradient using lipid analysis. The results obtained highlight (i) the role of the rivermouth as a key place ensuring the resilience of environments; (ii) the nutritional quality of food sources as one of the driving forces that can explain the upstream migration of species; (iii) the importance of transfers of allochthonous material from upstream to downstream for the supply of essential fatty acids; (iv) the environmental context at the dam level determining demographic and trophic impacts; (v) visible trophic impacts that differ according to functional groups, their place in the food web and the food plasticity of the species
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Mazancourt, Valentin de. "Diadromie, dispersion et histoire évolutive des complexes "Caridina nilotica" et "Caridina weberi" (Crustacea - Decapoda - Atyidae) dans les systèmes insulaires de l’Indo-Pacifique". Thesis, Paris, Muséum national d'histoire naturelle, 2018. http://www.theses.fr/2018MNHN0021/document.

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Les cours d’eau des îles tropicales abritent des organismes qui ont développé un cycle de vie diadrome, partagé entre une phase adulte en eau douce et une phase larvaire marine : l’amphidromie. Parmi ces organismes, dans la zone Indo-Pacifique, on trouve les crevettes du genre Caridina H. Milne Edwards, 1837. Avec plus de 300 espèces décrites, il s’agit du genre le plus diversifié de l’infra-ordre des Caridea, avec une systématique extrêmement confuse et compliquée. Au sein de ce genre, deux complexes d’espèces sont particulièrement bien représentés dans les systèmes insulaires de l’Indo-Pacifique, le complexe Caridina nilotica et le complexe C. weberi. Grâce au développement de nouvelles techniques de séquençage de nouvelles méthodes de taxonomie dite intégrative sont apparues, permettant de résoudre une partie des problèmes taxonomiques de ces groupes. L’objectif de la thèse était d’appliquer une approche de taxonomie intégrative aux espèces des complexes C. nilotica et C. weberi afin de clarifier leur systématique et, de fait, mieux appréhender leur biologie et fournir les outils aux gestionnaires pour mettre en place une meilleure conservation de ces espèces et de leurs milieux. Après avoir montré que certains caractères morphologiques traditionnellement utilisés pour décrire les espèces étaient influencés par l’environnement et donc fortement variables, l’étude de taxonomie intégrative a été conduite sur 92 espèces, permettant d’obtenir 1682 séquences auxquelles s’ajoutent 32 génomes mitochondriaux complets et 97 partiels, mettant en évidence 43 espèces nouvelles, certaines décrites au cours de la thèse. Les relations phylogénétiques entre les espèces des deux complexes ont été reconstruites à partir d’un grand jeu de données moléculaires, permettant de montrer que les complexes sont des groupes monophylétiques avec des différences en terme d’habitats occupés. Enfin, la faisabilité de l’étude sclérochronologique de l’amphidromie chez une espèce du complexe C. weberi (C. multidentata) a été testée sur la cuticule du pédoncule oculaire, avec une étude de l’ultrastructure de la cuticule, décrite pour la première fois chez cette espèce
Rivers of tropical islands harbor organisms that have developped a diadromous lifecycle, shared between a freshwater adult phase and a marine larval phase: amphidromy. Among these organisms, in the Indo-Pacific area are found shrimps of the genus Caridina H. Milne Edwards, 1837. With more than 300 described species it is the most speciose genus of the infra-order Caridea, with a most confused and complicated taxonomy. Within this genus, two species complexes are particularly well-represented in insular systems of the Indo-Pacific, the C. nilotica complex and the C. weberi complex. Thanks to the development of new sequencing techniques, new methods of integrative taxonomy appeared, allowing to resolve part of the taxonomic complexity of these taxa. The aim of the thesis was to apply an integrative taxonomy approach to species belonging to C. nilotica and C. weberi complexes in order to clarify their taxonomy and have a better understanding of their biology and provide tools to managers for establishing a better conservation of these species and their environments. After showing that some morphological characters traditionally used to describe species were influenced by the environment and so, highly variable, the integrative taxonomy was led on 92 species, allowing to obtain 1,682 sequences to which are added 32 complete and 97 partial mitochondrial genomes, highlighting 43 new species, some of them described during the thesis. Phylogenetic relationships among the species of the two complexes were reconstructed from a large molecular dataset, allowing to show that the complexes are monophyletic groups, with habitat differences. Finally, the feasibility of a sclerochronological study of amphidromy in a species of the C. weberi complex (C. multidentata) was tested on the eyestalk cuticle, with a study of the ultrastructure of the cuticle, described for the first time in this species
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Irvine, Mitchell. "Investigating incipient speciation in the widespread freshwater shrimp, Paratya australiensis (Kemp 1917)". Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/208903/1/Mitchell_Irvine_Thesis.pdf.

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While the notion of species is central to our understanding of biological processes, it has been impossible to arrive at a consensus regarding a single, widely applicable or functional concept. This project provides insight into the progression through the speciation process by a widespread species of freshwater shrimp, Paratya australiensis. Using mate choice experiments and genetic analysis, multiple reproductive barriers were identified indicating strong divergence between two populations. These barriers are consistent with requirements for species separation under various species concepts, providing strong evidence to support taxonomic revision of this cryptic species complex.
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Książki na temat "Atyidae"

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U.S. Fish and Wildlife Service. Region 1. Draft California freshwater shrimp (Syncaris pacifica Holmes 1895) recovery plan. Portland, Or: U.S. Fish and Wildlife Service, Region 1, 1997.

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Mariappan, N. Studies on the larval development of six freshwater prawns of the genus Caridina H. Milne Edwards, 1837 (Atyidae, Decapoda) from Kanchipuram and Thiruvallur districts, Tamil Nadu, India. Kolkata: Zoological Survey of India, 2007.

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Mariappan, N. Studies on freshwater prawns of family Atyidae and Palaemonidae from Kanchipuram and Thiruvallur Districts, Tamilnadu, India, including one new species of the Genus, Caridina H. Milne Edwards, 1837. Kolkata: Zoological Survey of India, 2006.

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Company, Awesome Notebook Publishing. Atyia's Farting Unicorn Notebook: Funny and Unique Personalised Notebook Gift for a Girl Called Atyia - 100 Pages - Perfect for Girls and Women - a Great Notebook Journal for Home, School College or Work. Independently Published, 2020.

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Części książek na temat "Atyidae"

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Christodoulou, Magdalini, Chryssa Anastasiadou, Jure Jugovic i Theodoros Tzomos. "Freshwater Shrimps (Atyidae, Palaemonidae, Typhlocarididae) in the Broader Mediterranean Region: Distribution, Life Strategies, Threats, Conservation Challenges and Taxonomic Issues". W A Global Overview of the Conservation of Freshwater Decapod Crustaceans, 199–236. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-42527-6_7.

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Patrascu, Andrei-Tudor. "The Atyiah Singer Index Theorem". W The Universal Coefficient Theorem and Quantum Field Theory, 69–89. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-46143-4_6.

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Dumont, Henri J. "The Crustacean Zooplankton (Copepoda, Branchiopoda), Atyid Decapoda, and Syncarida of the Nile Basin". W The Nile, 521–45. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-9726-3_26.

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Branstrator, Donn K., i Lucas Mwebaza-Ndawula. "Low-Oxygen Tolerance of the Atyid Prawn, Caridina Nilotica, in Lake Victoria (East Africa): Implications for Refuge from Nile Perch Predation". W Environmental Change and Response in East African Lakes, 125–33. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-017-1437-2_10.

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Short, J. W. "ATYIDAE AND PALAEMONIDAE, FRESHWATER SHRIMPS, PATSA MENA". W The New Natural History of Madagascar, 899–907. Princeton University Press, 2022. http://dx.doi.org/10.2307/j.ctv2ks6tbb.115.

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"Atyid shrimps of Hainan Island, southern China, with the description of a new species of Caridina (Crustacea, Decapoda, Atyidae)". W Advances in Freshwater Decapod Systematics and Biology, 207–31. BRILL, 2014. http://dx.doi.org/10.1163/9789004207615_013.

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"Parisia holthuisi, a new species of freshwater shrimp from Papua New Guinea (Crustacea, Decapoda, Atyidae)". W Studies on Malacostraca: Lipke Bijdeley Holthuis Memorial Volume, 173–78. BRILL, 2010. http://dx.doi.org/10.1163/9789047427759_009.

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"Species of Caridina nilotica group in China, with description of one new species (Crustacea, Decapoda, Atyidae)". W Studies on the Taxonomy of Crustaceans, 173–90. BRILL, 2021. http://dx.doi.org/10.1163/9789004464353_012.

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Coelho, Vinicius de Paula, Anna Julia Justi Molinari, Nilo da Silva Nunes Pirovani i Bruno de Lima Preto. "EFEITO DA SALINIDADE SOBRE A SOBREVIVÊNCIA DAS LARVAS DE Potimirim brasiliana Villalobos, 1959 (Crustacea, Decapoda, Atyidae)". W Crustáceos: Ecossistema, Classificação e Reprodução, 32–33. Atena Editora, 2019. http://dx.doi.org/10.22533/at.ed.8881919115.

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Mazancourt, V. de, W. Klotz, G. Marquet, B. Mos, D. C. Rogers i P. Keith. "New Insights on Biodiversity and Conservation of Amphidromous Shrimps of the Indo-Pacific islands (Decapoda: Atyidae: Caridina)". W Recent Advances in Freshwater Crustacean Biodiversity and Conservation, 381–404. CRC Press, 2021. http://dx.doi.org/10.1201/9781003139560-12.

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Streszczenia konferencji na temat "Atyidae"

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Terossi, M., C. M. C. A. Oliveira i F. L. Mantelatto. "DELIMITAÇÃO MOLECULAR EM CAMARÕES DO GÊNERO ATYA (CARIDEA: ATYIDAE)". W X Congresso Brasileiro sobre Crustáceos. Sociedade Brasileira de Carcinologia, 2018. http://dx.doi.org/10.21826/2178-7581x20180224.

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Galiotti, L. L., M. C. Machado, G. L. Gonçalves, P. Hoffmann i M. L. Negreiros-Fransozo. "MATURIDADE SEXUAL DE POTIMIRIM BRASILIANA (CARIDEA, ATYIDAE) DE UM RIACHO NA REGIÃO DE UBATUBA, SÃO PAULO, BRASIL". W X Congresso Brasileiro sobre Crustáceos. Sociedade Brasileira de Carcinologia, 2018. http://dx.doi.org/10.21826/2178-7581x2018203.

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Coelho, V. P., A. J. J. Molinari, N. S. N. Pirovani i B. l. Preto. "EFEITO DA SALINIDADE SOBRE A SOBREVIVÊNCIA DAS LARVAS DE POTIMIRIM BRASILIANA VILLA LOBOS, 1959 (CRUSTACEA, DECAPODA, ATYIDAE)". W X Congresso Brasileiro sobre Crustáceos. Sociedade Brasileira de Carcinologia, 2018. http://dx.doi.org/10.21826/2178-7581x2018220.

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Santos, L. V. R., E. L. Silva, F. P. A. Barros, A. P. Gonçalves, T. K. Pinto i P. A. Coelho-Filho. "DIVERSIDADE E ECOLOGIA DOS CAMARÕES DE ÁGUA-DOCE (CRUSTACEA PALAEMONIDAE E ATYIDAE) NO BAIXO SÃO FRANCISCO (NORDESTE DO BRASIL)". W X Congresso Brasileiro sobre Crustáceos. Sociedade Brasileira de Carcinologia, 2018. http://dx.doi.org/10.21826/2178-7581x2018265.

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Barros-Alves, S. P., D. F. R. Alves i G. L. Hirose. "BIOLOGIA POPULACIONAL DE ATYA SCABRA (LEACH, 1816) (DECAPODA: ATYIDAE): EVIDÊNCIAS DE UMA POPULAÇÃO EM RISCO DE EXTINÇÃO NO RIO SÃO FRANCISCO". W X Congresso Brasileiro sobre Crustáceos. Sociedade Brasileira de Carcinologia, 2018. http://dx.doi.org/10.21826/2178-7581x2018089.

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